Larimar Therapeutics, Inc.
Larimar Therapeutics, Inc. (LRMR) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · LRMR · as of Jun 8, 2026
Activity summary
Buy transactions
10
P-Purchase only
Sell transactions
0
12 Months
Buy/Sell ratio
∞
Buy/Sell (by trades)
Overall sentiment
Larimar Therapeutics, Inc. insiders have been net buyers of shares over the past 12 Months, which may signal confidence in the company's outlook.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
LRMR insider buying and selling by quarter
LRMR insider selling · LRMR insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · LRMR ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
LRMR executive sell shares · LRMR board member insider trading · LRMR insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Feb 27, 2026 | Flynn James E Director | Purchase | 1,084,012 | $5.42M⚡ | Form 4 |
| Feb 27, 2026 | Flynn James E Director | Purchase | 1,084,010 | $5.42M⚡ | Form 4 |
| Feb 27, 2026 | Flynn James E Director | Purchase | 831,978 | $4.16M⚡ | Form 4 |
| Feb 27, 2026 | Flynn James E Director | Purchase | 2,000,000 | $10.00M⚡ | Form 4 |
| Feb 27, 2026 | Hamilton Thomas Edward Director | Purchase | 100,000 | $500K | Form 4 |
| Feb 27, 2026 | THOMAS FRANK E Director | Purchase | 5,000 | $25K | Form 4 |
| Feb 27, 2026 | SHERMAN JEFFREY W Director | Purchase | 5,000 | $25K | Form 4 |
| Jan 26, 2026 | Shankar Gopi Chief Development Officer | Award | 25,637 | — | Form 4 |
| Jan 26, 2026 | Clayton Russell Chief Medical Officer | Award | 25,637 | — | Form 4 |
| Jan 26, 2026 | BEN-MAIMON CAROLE President and CEO · Director | Award | 100,100 | — | Form 4 |
| Jan 26, 2026 | Celano Michael CFO | Award | 37,604 | — | Form 4 |
| Jul 31, 2025 | Flynn James E Director | Purchase | 3,387,539 | $10.84M⚡ | Form 4 |
| Jul 31, 2025 | Flynn James E Director | Purchase | 3,387,529 | $10.84M⚡ | Form 4 |
| Jul 31, 2025 | Flynn James E Director | Purchase | 2,599,932 | $8.32M⚡ | Form 4 |
| Jan 22, 2025 | Shankar Gopi Chief Development Officer | Award | 23,306 | — | Form 4 |
| Jan 22, 2025 | Clayton Russell Chief Medical Officer | Award | 23,306 | — | Form 4 |
| Jan 22, 2025 | BEN-MAIMON CAROLE President and CEO · Director | Award | 91,000 | — | Form 4 |
| Jan 22, 2025 | Celano Michael CFO | Award | 34,185 | — | Form 4 |
| Feb 16, 2024 | Hamilton Thomas Edward Director | Purchase | 57,208 | $500K | Form 4 |
| Feb 16, 2024 | Flynn James E Director | Purchase | 1,430,206 | $12.50M⚡ | Form 4 |
| Feb 16, 2024 | Flynn James E Director | Purchase | 1,430,206 | $12.50M⚡ | Form 4 |
| Feb 16, 2024 | Flynn James E Director | Purchase | 1,430,205 | $12.50M⚡ | Form 4 |
| Feb 14, 2024 | THOMAS FRANK E Director | Purchase | 2,000 | $22K | Form 4 |
| Jan 17, 2024 | Shankar Gopi Chief Development Officer | Award | 22,500 | — | Form 4 |
| Jan 17, 2024 | Celano Michael CFO | Award | 31,250 | — | Form 4 |
Flynn James E
Director
Date
Feb 27
Shares
2,000,000
Price
$5.00
Value
$10.00M ⚡
Hamilton Thomas Edward
Director
Date
Feb 27
Shares
100,000
Price
$5.00
Value
$500K
BEN-MAIMON CAROLE
President and CEO · Director
Date
Jan 26
Shares
100,100
Price
—
Value
—
Flynn James E
Director
Date
Jul 31
Shares
3,387,539
Price
$3.20
Value
$10.84M ⚡
Flynn James E
Director
Date
Jul 31
Shares
3,387,529
Price
$3.20
Value
$10.84M ⚡
BEN-MAIMON CAROLE
President and CEO · Director
Date
Jan 22
Shares
91,000
Price
—
Value
—
Hamilton Thomas Edward
Director
Date
Feb 16
Shares
57,208
Price
$8.74
Value
$500K
Flynn James E
Director
Date
Feb 16
Shares
1,430,206
Price
$8.74
Value
$12.50M ⚡
Flynn James E
Director
Date
Feb 16
Shares
1,430,206
Price
$8.74
Value
$12.50M ⚡
Flynn James E
Director
Date
Feb 16
Shares
1,430,205
Price
$8.74
Value
$12.50M ⚡
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About LRMR insider trading
LRMR insider trades
Larimar Therapeutics, Inc. (LRMR) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Flynn James E (Director), Hamilton Thomas Edward (Director), THOMAS FRANK E (Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. LRMR insiders have been primarily buying, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Larimar Therapeutics, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
LRMR insider trading · 5 questionsThe insiders of Larimar Therapeutics, Inc. (LRMR) include executives and directors such as Flynn James E (Director), Hamilton Thomas Edward (Director), THOMAS FRANK E (Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026